Some users in APAC are experiencing issues with BBM [Resolved]

Looking in the CrackBerry Forums and on Twitter, it's easy to spot the fact there is currently some services down for BlackBerry subscribers. RIM is aware of the issue and is currently working on getting things back in order:

Some users in APAC are experiencing issues with BBM. We are investigating and apologize for any inconvenience.

At this point, it remains a small percentage of users affected. On a somewhat related note, if you're having issues accessing BlackBerry App World from your device, it's not due to an outage. It's because BlackBerry App World itself is down for maintenance.